On the activity of glutamine synthetase in the red blood cells

 activates the enzyme, Mn++, Zn++ and especially 

MuLK, a Eukaryotic Multi-substrate Lipid Kinase*

It was stimulated by calcium when magnesium concentrations were low and inhibited by

Interrelations of plasma calcium, inorganic phosphate, magnesium, and protein over the first week of life

A direct correlation was also found between changes in

Evaluation of calcium and magnesium contents in tooth enamel without any pathological changes: in vitro preliminary study

Statistically significant correlation between the

 was found at a depth between 150 and 900 µm.

Magnesium sulfate in combination with nimodipine for the treatment of subarachnoid hemorrhage: a randomized controlled clinical study

 (Mg2+) can competitively inhibit the influx of 

[Spanish bottled and tap water analysis and their relation with urinary lithiasis].

 (p = 0.0001) and high correlation between bicarbonate and sodium concentration (p = 0.0001, Pearson coefficient 0.958) was found.

A Higher Magnesium Dialysate Concentration Treats Hypomagnesemia

 (0.25 vs 0.75 mmol/L or 0.5 vs 1.5 mEq/L, respectively).

Integrin alpha1beta1 (VLA-1) mediates adhesion of activated intraepithelial lymphocytes to collagen.

Cell adhesion was dependent on extracellular divalent cations, a characteristic event of VLA-1 never before shown for IELs: manganese and

 supported binding in a dose-dependent manner; 

Calciuric response to an acute acid load in healthy subjects and hypercalciuric calcium stone formers.

 suggested that the target tubular site for acid load was the thick ascending limb of Henle's loop.

 formers than in healthy control or time-control subjects.

Control of leucocyte function-associated antigen-1-dependent cellular conjugation by divalent cations.

Effects of magnesium and isradipine on contractile activation induced by the thromboxane A2 analog U46619 in human uteroplacental arteries in term pregnancy.

Effect of salmon calcitonin on symptoms and urinary excretion of 5 hydroxyindoleacetic acid in the carcinoid syndrome.

 should be monitored closely during such treatment to avoid depletion of electrolytes and the associated morbidity and mortality.

[Magnesium and arrhythmia].

On the other hand, given the known antagonism between

 on the contractility of the muscular fibre, a similar antagonism might be active with regards to electrogenesis.

Influence of cations and albumin on human spermatozoa.

Motility was increased in … of small amounts of

 above 0.8 mM. Moderate concentrations of albumin (0.5-1%) improved motility, but the … effect of this compound--leading to a best sperm survival--appeared with higher concentrations (4%).

Studies of eosinophil medusa cells by electron imaging modes.

These films of patients with eosinophilia contained many medusa cells and much higher ratios of medusa cells to eosinophils than … point-dried specimens, if they were prepared as for routine hematologic examination, and precautions were taken to insure that

 in collection and fixation … were not sequestered.

Magnesium reduces calcium oxalate crystal formation in human whole urine.

There was a clear inverse correlation between

[Interrelationship of calcium and magnesium in the case of a varying magnesium content in the diet of jaw fracture patients].

 exchange in lesions of the jaws and an intensified accumulation of these ions by the time of the initial formation of the secondary callus were revealed.

Platelet aggregation and the ouabain-insensitive ATPase. Ecto-ATPase, reflection of membrane integrity.

 at increasing concentrations caused diminishing activity levels.

Calcium and magnesium concentration in sweat of normal children and patients with cystic fibrosis.

In both groups, there was a highly significant correlation between

 suggesting that these two ions share or compete for a common transport mechanism.

Spectrophotometric determination of magnesium in biological fluids with xylidyl blue II.

, sodium, potassium, and chlorides interfere seriously with the 

Determination of serum ionic calcium with an ion-selective electrode: evaluation of methodology and normal values.

 in physiological concentrations cause a slight depression of the electrode9s response to 

, indicating an interference by magnesium in the method.

CORRELATIONS BETWEEN WATER HARDNESS AND CARDIOVASCULAR DEATHS IN OKLAHOMA COUNTIES.

Similar negative correlations existed for

 in the United States and for calcium concentrations in Great Britain.

Effect of magnesium and calcium ions on the release of acetylcholine

, and we have found that these two cations have opposite effects on the output of transmitter from the preganglionic nerve endings.

Impact of magnesium:calcium ratio on calcification of the aortic wall

Calcium deposition in the rat … dramatically increased when the

 = 1:1; 1.5 mmol/L calcium and 1.5 mmol/L magnesium) respect to low magnesium … (ratio Mg:Ca = 1:3, 1.5 mmol/L calcium and 0.75 mmol/L magnesium).

Increased intracellular magnesium attenuates β-adrenergic stimulation of the cardiac CaV1.2 channel

Exposure of acutely dissociated adult VMs to higher

 concentrations decreased isoproterenol stimulation of the 

 current from 75 ± 13% with 0.8 mM Mg2+i to 20 ± 8% with 2.4 mM Mg2+i.

Magnesium reduces calcification in bovine vascular smooth muscle cells in a dose-dependent manner

 into the cells decreased with increasing 

Magnesium Carbonate‐Containing Phosphate Binder Prevents Connective Tissue Mineralization in Abcc6−/− Mice–Potential for Treatment of Pseudoxanthoma Elasticum

Treatment of these mice with … magnesium carbonate‐enriched diet 

 being 5‐fold higher than in the control diet) completely prevented mineralization of the vibrissae up to 6 months of age, as demonstrated by computerized morphometric analysis of histopathology as well as by 

Dual action of Mn++ upon the secretion of insulin and glucagon from the isolated, perfused canine pancreas

SummarySince Mn++ apparently interferes with excitation-contraction coupling by both reducing inward movement of Ca++ across the cell membrane and by displacing Ca++ from …, perfused canine pancreas to elucidate the existence of a similar effect in stimulus-secretion coupling and to draw comparisons with the effect of

Magnesium sulfate exposure increases fetal blood flow redistribution to the brain during acute non-acidemic hypoxemia in goats.

Effect of calcium and magnesium on dendritic potentials

 changes take place in the ratio between the amplitudes of the first and second dendritic potentials evoked by paired stimuli: reduction of the second … of Ca++.4.Conclusions are drawn regarding the postsynaptic origin of the dendritic potentials of the cortex and chemical transmission in the synapses.

Morphological and Molecular Characterization of a Cypovirus (Reoviridae) from the Mosquito Uranotaenia sapphirina (Diptera: Culicidae)

The transmission rate was enhanced by the presence of

Haliotis tuberculata hemocyanin (HtH): analysis of oligomeric stability of HtH1 and HtH2, and comparison with keyhole limpet hemocyanin KLH1 and KLH2.

With the HtH1 subunit, reassociation in … presence of 10 and 100mM

 yielded an almost 100% conversion into didecamers, whereas the HtH2 subunit produced a mixture containing large numbers of short multidecamers and relatively few didecamers, together with a considerable number of smaller diameter helical/tubular polymers.

Diversity of nicotinic acetylcholine receptors in rat hippocampal neurons. IV. Regulation by external Ca++ of alpha-bungarotoxin-sensitive receptor function and of rectification induced by internal Mg++.

 regulates agonist efficacy and cooperativity at the alpha-BGT-sensitive neuronal nAChR, modulates rundown and counteracts 

 -dependent inward rectification of type IA currents.

Differential effects of spermine on phosphatidylinositol 3-kinase and phosphatidylinositol phosphate 5-kinase.

 stimulated PI 3-kinase activity at submaximal concentrations of 

1.25 mM), inhibition was observed at optimal concentration of Mg2+ (2 mM).

Mouse sperm membrane potential: changes induced by Ca2+

 caused a depolarization sensitive to: nimodipine (25 μM), trifluoperazine (12.5 μM) and 

 (1.2 mM), suggesting the participation of Ca2+ channels.

Magnesium and reserpine influence norepinephrine sensitivity of vas deferens in rats.

These results suggest that the failure of reserpine to induce supersensitivity to NE in rat vas deferens may be due to an enhanced antagonism of

 movements in this preparations due to the poor capacity of rat tissue to retain Ca++.

[A comparative study of the psychotropic activity of different salts of homopantothenic acid].

In homopantothenic acid derivatives, the substitution of

 gives rise to a decrease of the sedative and potentiation of the stimulating properties.

Cellular Mg++ accumulation is altered by extracellular Na+ and directly affects agonist-induced mobilization of Ca++ in vascular smooth muscle.

Uptake of 45Ca at cellular high affinity sites was decreased by

 much more than 28Mg uptake was altered by 

In vitro magnesium- and calcium-induced sialidase activity in caprine intestinal mucosa cells.

 together induced higher sialidase activities identical to 0.0191 mg per ml (2.06 Units) and 0.0194 mg per ml (2.09 Units) in small and large intestinal mucosal cells, respectively.

Calcium inhibition of the ATP in equilibrium with [32P]Pi exchange and of net ATP synthesis catalyzed by bovine submitochondrial particles.

 required for half-maximal activation of the exchange, without changing Vmax.

Effect of calcium and magnesium ions on the intestinal absorption of oleic acid in vitro.

The present work shows that the simultaneous presence of

 did not impede oleic acid absorption processes but, on the contrary, enhanced them.

Consequences of low dietary magnesium and high dietary calcium on pregnancy outcome and tissue mineralization in rats.

 of bone, serum, and kidney were depressed while serum alkaline phosphatase activity increased.

Calcium‐dependent chloride secretion in rat colon epithelium.

Role of calcium ions in kinin‐induced chloride secretion

 antagonized the effects of the kinin in the presence of 

influence of Mg++ and reserpine on the reactivity of rat seminal vesicle to 5-hydroxytryptamine.

These results suggest that the failure of reserpine to induce supersensitivity to 5-HT in rat seminal vesicle may be due to an enhanced antagonism of

 movements in this preparation due to the poor capacity of rat tissue to retain Ca++ (Krishnamurty and Grollman, 1976).

[Muscular myosin structural and functional changes during interaction with ATP and bivalent ions].

 are specific in the myosin ATPase reaction and they accelerate considerably the decay of this complex, while 

A study of tetanic and post‐tetanic potentiation of miniature end‐plate potentials at the frog neuromuscular junction.

 containing solution, but increases tetanic potentiation under reversed gradient.

Influences of Mg++ and reserpine on calcium fluxes and sensitivity of the rat aorta.

These results suggest that the failure of reserpine to induce supersensitivity in rat aorta to NA may be due to poor capacity of the muscle to retain Ca++ and probably also due to an enhanced antagonism of

Inhibition of synaptic transmission by morphine and its antagonism by Ca++ in the isolated sympathetic ganglion of frog and rat.

Calcium, cells and virus--alterations caused by paramyxoviruses.

 (but not Mg 2+ ) effectively “dilutes” 45 

+ uptake; Ca 2+ is less effective in “diluting” 54 Mn 2+ uptake, since 54 Mn 2+ appears to bind to Mg sites, as well as to Ca sites, in cells.

[Control of mitochondrial Mg++-efflux].

The results permit the conclusion that inorganic phosphate,

 and various metabolites of the cell metabolism influence the 

 distribution between the extra- and intramitochondrial space, thus controlling the permeability of the mitochondrial inner membrane for monovalent cations.

Calcium-dependent activation of tryptophan hydroxylase by ATP and magnesium.

 on enzyme activity was enhanced by μM concentrations of 

The effect of calcium and magnesium on the spontaneous release of transmitter at insect motor nerve terminals.

The frequency of the miniature potentials was reduced as the

 was raised from 0 to 10 mM, depending on the presence of 

The possible roles of membrane organization in the activity of androgen biosynthetic enzymes associated with normal or tumorous mouse Leydig cell microsomes.

Treatment of microsomal membranes from normal testes with 0.1 M

 caused a marked decrease in 17 beta-dehydrogenase activity, measured as conversion of exogenous [3H]androstenedione to [3H]-testosterone, without serious effects on activities of 3 beta-ol-dehydrogenase or 17 alpha-hydroxylase.

In vitro reconstitution of calf brain microtubules: effects of solution variables.

 and guanosine triphosphate, but inhibited by 

Effects of calcium on flagellar movement in the trypanosome Crithidia oncopelti.

 concentrations was probably due to competitive inhibition of 

Studies of the mechanism of lymphocyte-mediated cytolysis. VII. Two stages in the T cell-mediated lytic cycle with distinct cation requirements.

Cytolysis required the presence of Ca++ ions, but addition of

 containing medium synergistically enhanced target cell destruction.

Characterization of the ATP‐phosphohydrolase activity of bovine spermatozoa flagellar extracts

Feeding following intraventricular injection of Ca++, Mg++ or pentobarbital in pigs

 of 6.5 + 6.5 mumoles, 12.5 + 12.5 mumoles or 25 + 25 mumoles also increased food intake linearly and the mixture of ions was more effective than equivalent concentrations of Ca++ or Mg++ alone.

Potassium activation in Helix aspersa neurones under voltage clamp: a component mediated by calcium influx.

 mediated potassium activation system saturates at high external calcium concentrations and is inhibited by external 

Influence of calcium and magnesium ions on the sino-atrial node pacemaker activity of the canine heart.

Positive chronotropic responses either to

 or to isoproterenol were significantly depressed by increasing 

Measurements of cell adhesion. II. Quantitative study of the effect of divalent ions on cell adhesion.

When magnesium and calcium ions are present together at similar concentrations the

Regulation of pyruvate dehydrogenase in muscle. Inhibition by citrate.

The active form of this enzyme was increased almost 3-fold upon preincubation with 10 mm

Magnesium-dependent ATP-ase in membranes of 5-hydroxytryptamine storage organelles.

Rat liver pyruvate carboxylase. IV. Factors affeing the regulation in vivo.

 may also be regulatory, but inhibition by MgADP or 

 was considered less likely to occur under physiological conditions.

Adenyl cyclase in cardiac tissue.

Ca++ was inhibitory both in the presence and absence of F-; the inhibitory action of

 was found to be competitive with respect to 

Effect of Bromide Ions on Junctional Transmission

Junctional Membrane Uncoupling

 appear to have three roles in the junctional coupling processes: (a) in the permeability of the junctional membranes; (b) in the permeability of the perijunctional insulation; and (c) a role long known— in the mechanical stability of the cell junction.

Relation of Magnesium Ions to Calcium and Phosphate Absorption

It has been shown that magnesium-deficient rats absorb more calcium from the gastrointestinal tract than do control rats3 and the active transport of

 across the intestinal wall of several species is depressed by 

Hydro-geochemical analysis based on entropy and geostatistics model for delineation of anthropogenic ground water pollution for health risks assessment of Dhenkanal district, India

 and PO4− were significantly high which might be due the presence of CaHCO3 and MgPO4 in the groundwater samples.

Editing of phosphatidic acid and phosphatidylethanolamine by acyl-CoA: lysophospholipid acyltransferases in developing Camelina sativa seeds

 and potassium ions inhibit them in concentrations of 0.05–2.0 mM. All three types of ions inhibit CsLPEATs activity.

[Effects of NO3- stress on cucumber seedling growth and magnesium absorbing under suboptimal temperature].

The magnesium content of cucumber seedlings was also significantly decreased compared with control treatment, especially in the IV treatment (suboptimal temperature +140 mmol · L(-1) NO3- + 1 mmol · L(-1) Mg2+), and the antagonistic impact of

 absorption on the absorption of potassium and 

On how differently the quasi-harmonic approximation works for two isostructural crystals: thermal properties of periclase and lime.

 is found to dramatically affect the validity domain of the quasi-harmonic approximation that, for thermal structural properties (such as temperature dependence of … at least up to 2000 K and quasi-harmonic constant-pressure specific heat, CP(T), up to about 1000 K in both cases.

Anhydrobiosis in yeast: influence of calcium and magnesium ions on yeast resistance to dehydration-rehydration.

 availability directly influenced yeast cells' resistance to dehydration and, when additionally supplemented with 

, this provided further significant increase of yeast resistance to dehydration.

The effect of vitamin D on enzyme activities in the mucosal cells of the chick small intestine

The ATPase and the p-nitrophenyl phosphatase required

 for activity but could be further stimulated by addition of 

Effect of metal ions on structure and activity of papain from Carica papaya.

Thermal denaturation studies showed that the binding of

 bring about change in the thermal stability of papain at various concentrations of these metal ions.

In vitro transcription of the double-stranded RNA bacteriophage phi 6 is influenced by purine NTPs and calcium.

Actin-bound nucleotide/divalent cation interactions.

The cation concentration range over which this modulation occurs is about 100-fold higher for

 than for Ca++, again because of the different characteristics of the Mg++ and 

Divalent ion-dependent reversible swelling of tomato bushy stunt virus and organization of the expanded virion.

Swelling of native tomato bushy stunt virus at pH 7 is under the specific control of very strongly bound

Temperature- and Mg-ATP-dependent regulation of Ca2+ sensitivity of smooth muscle actomyosin ATPase.

Activation of EGTA-Mg-ATPase at low ATP concentration is not due to a pseudo-ATPase, or due to denautration … 37 degrees C. Magnesium concentrations above 1 mM are required for observing the enhanced EGTA-Mg-ATPase activity and the

[Effect of calcium and magnesium ions on different stages of genetic transformation in Bacillus subtilis].

 stimulate more late stages of transformation.

The control of the adenosine triphosphatase of Rhodospirillum rubrum chromatophores by divalent cations and the membrane high energy state.

Regulation of yeast inorganic-pyrophospphatase activity by divalent cations.

 inhibits the enzymatic hydrolysis of inorganic pyrophosphate due to displacement of three 

 from the enzyme complex with the substrate.

Ion transport in liver mitochondria. VI. The role of surface binding on aerobic Ca++translocation.

, by lowering the pH, or by increasing the osmolarity of the medium, and the rates of oxygen uptake and H+ release undergo a parallel decrease.

Some Criteria for Removal of Skeletally Bound Radioactive Strontium.∗

 routinely decreases urinary phosphorus and 

 causing their balance to become more positive.

CATION AND ANION BALANCE DURING ACTIVE ACCUMULATION OF CA++ AND MG++ BY ISOLATED MITOCHONDRIA.

They have suggested that Mg++ uptake proceeds by a different mechanism than Ca++ uptake, since

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Possible Interaction: Magnesium Cation and Calcium Supplement

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